clarkson's "my country 'tis of thee" drew a special shout out from chuck schumer. >> wow. >> reporter: we did reach out to beyonce's publicist. we haven't gotten any special statement from the joint congressional committee. senator lamar alexander said beyonce sounded good to him. jim acosta, cnn, washington. >>> well, a stunning upset at the australian open. serena williams goes down to a teenager and fellow american. we'll have details of the big we'll have details of the big win by sloan stevens. let's go. ♪ ♪ ♪ [ male announcer ] introducing the all-new cadillac xts... another big night on the town, eh? ...and the return of life lived large. ♪ [ female announcer ] new roc® retinol correxion max. the power of roc® retinol is intensified with a serum. it's proven to be 4x better at smoothing lines and deep wrinkles than professional treatments. roc® max for maximum results. so i used my citi thankyou card to pick up some accessories. a new belt. some nylons. and what girl wouldn't need new shoes? and with all the points i've been earning, i was able to get us a flight to